Patients with ACS represent a highly complex situation that requires management using a multidisciplinary approach. Nursing plays a crucial role in the evaluation, monitoring, intervention planning and educational process to achieve optimal results for the pre-established objectives. One important aspect is analysing and measuring care performance, i.e. outcome indicators that reflect the quality of care. The objective of this study was to monitor nursing-sensitive outcomes (NSOs) to enable critical areas to be identified, care improvement to be implemented, and patient health needs to be adequately met. The study was organised as a retrospective observational review of data extracted from electronic medical records (eMRs) on total admissions to the Hospital ‘ s Coronary Intensive Care Unit (CICU) in 2023. A validated checklist was used to study the following elements: bioclinical aspects, pain scale, fall risk, pressure ulcer risk, degree of autonomy, and tromboembolic and haemorrhagic index. The following psyco-social-relational variables were collected: level of education, loneliness index, and counselling and health education activities. Total admissions were 652, with 7 beds, an average stay of 2.79 cases, a bed turnover rate of 88.86, cardiac markers at 100%, NPRS assessed at 96%, Conley scale at 91%, Braden scale at 90%, Barthel index at 93%, CHA2DS2-VASc score of 95%, and Killip classification and GRACE score of 92%. The level of education was 45%, and the loneliness index was found to be 12% in patients aged >85 years. Counselling was recorded in 50% of cases, and the educational aspect involved 62%. The clinical audit enabled assessment of the appropriateness of the care processes, the identification of critical issues and missed nursing care, as well as aspects which need to be improved through clinical governance with structured briefings.